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Finding the Fourth Proportional to 579,715.10, 812,154.10 and 579,715.10

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Solution

The fourth proportional to 579,715.10, 812,154.10 and 579,715.10 is: 812,154.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,715.10 : 812,154.10 = 579,715.10 : x
  2. Step 2: Convert to fraction form
    579,715.10/812,154.10 = 579,715.10/x
  3. Step 3: Cross multiply
    579,715.10x = 812,154.10 × 579,715.10
  4. Step 4: Simplify right side
    579,715.10x = 470,817,995,296.91
  5. Step 5: Solve for x
    x = 470,817,995,296.91/579,715.10
  6. Step 6: Final answer
    x = 812,154.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.